#include<bits/stdc++.h>
using namespace std;
int n,a[10001],dp[10001],ans;
int main(){
     cin>>n;
     for(int i=1;i<=n;i++){
     	cin>>a[i];
     	dp[i]=1;
     	for(int j=i-1;j>=1;j--){
            if(a[j]<=a[i]) dp[i]=max(dp[i],dp[j]+1); 
            ans=max(ans,dp[i]);
        } 
     }
     cout<<ans;
    return 0;
}

/**************************************************************
	Problem: 1794
	User: jiangzhenghang
	Language: C++
	Result: Accepted
	Time:293 ms
	Memory:2152 kb
****************************************************************/